<trans-title xml:lang="en">High-brightness and Monodisperse Quaternary CuInZnS@ZnS Quantum Dots with Tunable and Long-lived Emission</trans-title>

Zi CHEN; Aidi ZHANG; Ke GONG; Haihua LIU; Gang YU; Qingsong SHAN; Yong LIU; Haibo ZENG

doi:10.15541/jim20240426

Journal of Inorganic Materials, Volume. 40, Issue 4, 433(2025)

High-brightness and Monodisperse Quaternary CuInZnS@ZnS Quantum Dots with Tunable and Long-lived Emission

Zi CHEN¹, Aidi ZHANG^1,2、*, Ke GONG², Haihua LIU¹, Gang YU³, Qingsong SHAN⁴, Yong LIU², and Haibo ZENG^4、*

¹1. Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huaian 223003, China

²2. Nanjing Bready Advanced Materials Technology Co., Ltd., Nanjing 211103, China

³3. Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

⁴4. MIIT Key Laboratory of Advanced Display Materials and Devices, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

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Figures & Tables(21)

1. Optical and morphology characterization of the CuInS-based QDs(a) Synthetic route of the CuInS-based QDs; (b) Photograph of the CuInZnS@ZnS QDs with shell growth of 20 h (Cu : In : Zn is 1 : 2 : 3) under 365 nm showing brilliant luminescence; (c) Transient PL decays of the CuInZnS@ZnS QDs with different shell growth time (Cu : In : Zn is 1 : 2 : 3); (d) TEM images of the CuInZnS/ZnS QDs (Cu : In : Zn is 1 : 2 : 3) with shell growth of 20 h.Colorful figures are available on website

Table 1. Relevant parameters for CuInS QDs synthesized with different molar stoichiometric ratios of Cu : In. λem at the PL central emission peak from the QDs solution when excited at 450 nm. The amounts of DDT (10 mL) and CuI (0.1 mmol) were held fixed

Table 1. Relevant parameters for CuInS QDs synthesized with different molar stoichiometric ratios of Cu : In. λem at the PL central emission peak from the QDs solution when excited at 450 nm. The amounts of DDT (10 mL) and CuI (0.1 mmol) were held fixed

Table 2. Relevant parameters for CuInZnS alloyed QDs synthesized with differnt molar stoichiometric ratios of Cu : In. λem is the PL central emission peak from the QDs solution when excited at 450 nm. The amounts of DDT (10 mL) and CuI (0.1 mmol) were held fixed

Table 2. Relevant parameters for CuInZnS alloyed QDs synthesized with differnt molar stoichiometric ratios of Cu : In. λem is the PL central emission peak from the QDs solution when excited at 450 nm. The amounts of DDT (10 mL) and CuI (0.1 mmol) were held fixed

Table 3. PL lifetime of CuInZnS@ZnS QDs with the stoichiometric ratio of Cu : In at 1 : 2 after excited at 450 nm.

Table 3. PL lifetime of CuInZnS@ZnS QDs with the stoichiometric ratio of Cu : In at 1 : 2 after excited at 450 nm.

Table 4. Relevant parameters for CuInZnS@ZnS QDs with the stoichiometric ratio of Cu : In at 1 : 4, synthesized with different ZnS shell growth time. λem is the PL central emission peak from the QDs solution when excited at 450 nm. The amounts of DDT (10 mL) and CuI (0.1 mmol) were held fixed.

Table 4. Relevant parameters for CuInZnS@ZnS QDs with the stoichiometric ratio of Cu : In at 1 : 4, synthesized with different ZnS shell growth time. λem is the PL central emission peak from the QDs solution when excited at 450 nm. The amounts of DDT (10 mL) and CuI (0.1 mmol) were held fixed.

Table 1.
Relevant parameters for CuInS QDs synthesized with different molar stoichiometric ratios of Cu : In. λ_em at the PL central emission peak from the QDs solution when excited at 450 nm. The amounts of DDT (10 mL) and CuI (0.1 mmol) were held fixed

Table 1.
Relevant parameters for CuInS QDs synthesized with different molar stoichiometric ratios of Cu : In. λ_em at the PL central emission peak from the QDs solution when excited at 450 nm. The amounts of DDT (10 mL) and CuI (0.1 mmol) were held fixed

Table 2.
Relevant parameters for CuInZnS alloyed QDs synthesized with differnt molar stoichiometric ratios of Cu : In. λ_em is the PL central emission peak from the QDs solution when excited at 450 nm. The amounts of DDT (10 mL) and CuI (0.1 mmol) were held fixed

Table 2.
Relevant parameters for CuInZnS alloyed QDs synthesized with differnt molar stoichiometric ratios of Cu : In. λ_em is the PL central emission peak from the QDs solution when excited at 450 nm. The amounts of DDT (10 mL) and CuI (0.1 mmol) were held fixed

Table 3.
PL lifetime of CuInZnS@ZnS QDs with the stoichiometric ratio of Cu : In at 1 : 2 after excited at 450 nm.

Table 3.
PL lifetime of CuInZnS@ZnS QDs with the stoichiometric ratio of Cu : In at 1 : 2 after excited at 450 nm.

Table 4.
Relevant parameters for CuInZnS@ZnS QDs with the stoichiometric ratio of Cu : In at 1 : 4, synthesized with different ZnS shell growth time. λ_em is the PL central emission peak from the QDs solution when excited at 450 nm. The amounts of DDT (10 mL) and CuI (0.1 mmol) were held fixed.

Table 4.
Relevant parameters for CuInZnS@ZnS QDs with the stoichiometric ratio of Cu : In at 1 : 4, synthesized with different ZnS shell growth time. λ_em is the PL central emission peak from the QDs solution when excited at 450 nm. The amounts of DDT (10 mL) and CuI (0.1 mmol) were held fixed.